(1)Qib 80 welded lifting sawWLL thiab index
Table 1: WLL nrog saw sling ceg (s) lub kaum sab xis ntawm 0 ° ~ 90 °
| Txoj kab uas hla (mm) | Max. WLL | ||
| Ib ceg t | 2- ceg t | 3o4 luj t | |
| 7.1 | 1.6 | 2.2 | 3.3 |
| 8.0 ib | 2.0 | 2.8 | 4.2 |
| 9.0 ib | 2.5 | 3.5 | 5.2 |
| 10.0 | 3.2 | 4.4 | 6.7 |
| 11.2 | 4.0 | 5.6 | 8.4 |
| 12.5 ib | 5.0 | 7.0 ib | 10.5 |
| 14.0 Nws | 6.3 | 8.8 ib | 13.2 |
| 16.0 Nws | 8.0 ib | 11.2 | 16.8 ib |
| 18.0 Nws | 10.0 | 14.0 Nws | 21.0 Nws |
Table 2: WLL index
(2)saw caj dabhom thiab ob txhais ceg kaum
a. ib ceg saw sling
b. 2-leg chain sling
c. 3-leg chain sling
d. 4-leg chain sling
(3) lifting round txuas saw siv
a. lub load hnyav yuav tsum sib npaug los yog tsawg dua lifting saw sling max. WLL.
b. thaum siv 2-leg lossis ntau ceg saw sling, qhov loj dua sling ob txhais ceg lub kaum sab xis, qhov tsawg dua nws tuaj yeem nqa tau; ob txhais ceg lub kaum sab xis yuav tsum tsawg dua 120 ° nyob rau hauv txhua rooj plaub (piv txwv li, saw ceg lub kaum sab xis nrog ntsug lub kaum sab xis yuav tsum tsawg dua 60 °).
c. Thaum nqa hauv choker hitch, lub load yuav tsum tsawg dua 80% WLL.
d. Lub lifting saw yuav tsum ncaj tsis muaj torsion, knotting los yog dabtsi yog khoov. Sim zam cov khoom hnyav dov ntawm cov saw hlau.
(1) Kev tshuaj xyuas txhua hnub
a. Inspector, zaus thiab cov ntaub ntawv
Tus neeg teb xov tooj lossis cov neeg ua haujlwm raug xaiv yuav tsum tau ua qhov kev tshuaj xyuas zoo li niaj hnub ntawm cov khoom nqa nqa txhua hnub ua haujlwm, thiab yuav tsum muaj cov ntaub ntawv "cov ntaub ntawv tshuaj xyuas txhua hnub ntawm sling" (saib Daim Ntawv Ntxiv) ntawm qhov chaw, qhia tias cov hlua tuaj yeem siv tau ib txwm.
b. Kev tshuaj xyuas qhov muag
Txheeb xyuas qhov pom ntawm qhov pom ntawm qhov hnyav hnyav, deformation lossis kev puas tsuaj sab nraud. Yog tias pom muaj qhov tsis xws luag hauv kev tshuaj ntsuam xyuas, paub meej tias nws puas tuaj yeem siv dua raws li txoj kev tshuaj xyuas tsis tu ncua.
(2) Kev tshuaj xyuas ib ntus
a. Inspector, zaus thiab cov ntaub ntawv
Cov neeg ua haujlwm raug xaiv yuav tsum ua kom tiav kev tshuaj xyuas ntawm cov saw hlau raws li cov cim qhia tsis zoo uas tau hais los ntawm kev tshuaj xyuas tsis tu ncua, thiab ua cov ntaub ntawv los ntsuas seb cov saw hlau puas tuaj yeem siv txuas ntxiv.
b. Xyuas cov ntsiab lus
i) Txawm hais tias cov cim sab nraud xws li nqa cov hlua khi thiab qhov kawg ua haujlwm yog qhov tseeb;
ii) Cov khoom txuas sab saud thiab qis kawg (tus txuas txuas txuas, nruab nrab txuas, txuas txuas thiab hooks) ntawm cov saw nqa tau deformed, txiav thiab tawg, uas dhau ntawm cov qauv yuav tsum tau ua thiab siv tsis tau;
iii) Deformation ntawm cov saw txuas: cov saw txuas yog twisted, khoov thiab elongated, thiab siv tsis tau thaum nws tshaj li cov txheej txheem;
iv) Txuas hnav: qhov thais, thais, gouge thiab hnav ntawm qhov txuas ntawm sab nraud ntawm qhov ncaj ncaj tsis tuaj yeem siv thaum nws dhau qhov kev xav tau;
v) Hook deformation: qhov "qhib" deformation thiab distortion ntawm openness ntawm tus nuv tshaj tus qauv yuav tsum tau thiab siv tsis tau;
vi) Cov kab nrib pleb: cov kab nrib pleb ua pov thawj los ntawm kev pom qhov muag lossis NDT siv tsis tau.
a. deformation:
sab nrauv elongation ＞ 3%
sab hauv elongation ＞ 5%
b. hnav:
txuas hla ntu txoj kab uas hla tom qab hnav yuav tsum tsis txhob tsawg dua 10% (piv txwv li, txoj kab uas hla <90% nominal)
c. tawg:
Tsis muaj kev tawg yog tso cai rau saum npoo ntawm cov saw txuas los ntawm kev tshuaj xyuas qhov muag lossis kev tshuaj xyuas cov khoom siv.
d. khoov los yog distortion:
Tsis pom tseeb dabtsi yog khoov los yog distortion, loj corrosion los yog txuas uas tsis tuaj yeem raug tshem tawm raug tso cai rau cov saw txuas.
(2) nuv
a. Hook qhib: qhov nce ntawm tus nuv qhib qhov loj yuav tsum tsis pub tshaj 10% ntawm tus nqi nominal.
b. Hnav ntawm qhov kev nyuab siab (kev phom sij): qhov tuab ntawm ntu ntawm qhov hnav yuav tsum tsis txhob txo qis dua 5%
c. Twist deformation: qhov twist deformation ntawm nuv lub cev yuav tsum tsis pub tshaj 5%.
d. Cracks: Cov kab nrib pleb tsis tso cai rau tag nrho qhov sib txuas los ntawm kev tshuaj xyuas qhov muag lossis kev tshuaj xyuas cov khoom siv.
e. Nicks thiab gouges: lawv tuaj yeem kho los ntawm kev sib tsoo lossis ua ntaub ntawv. Qhov chaw kho thiab qhov chaw nyob ib sab yuav tsum hloov mus zoo yam tsis muaj kev hloov pauv sai hauv ntu. Lub thickness ntawm polished seem yuav tsum tsis txhob raug txo los ntawm ntau tshaj 5%.
(3) master link
a. Distortion: qhov distortion ntawm tag nrho tus tswv txuas yuav tsum tsis pub tshaj 5%.
b. Hnav: hnav ntawm tus tswv txuas saum npoo yuav tsum tsis pub tshaj 10% ntawm thawj txoj kab uas hla
c. Cracks: Cov kab nrib pleb tsis tso cai rau ntawm tag nrho tus tswv txuas qhov chaw los ntawm kev tshuaj xyuas qhov muag lossis kev tshuaj xyuas cov khoom siv.
(4) shackles thiab lwm yam accessories
a. Qhib: qhov qhib loj ntawm shackle tshaj 10% ntawm tus nqi qub.
b. Hnav: txoj kab uas hla ntawm tus pin lossis tus pin ncej yog hnav ntau dua 10% ntawm tus thawj txoj kab uas hla; qhov hnav ntawm ntu kev ntxhov siab (kev phom sij) yog ntau dua 5%
c. Crack: tsis muaj qhov tawg raug tso cai rau ntawm tag nrho cov khoom siv los ntawm kev tshuaj xyuas qhov muag lossis kev tshuaj xyuas cov cuab yeej.
(1) Ib txwm saw txuas
(2) Deformed nuv (scrapped)
(3) Deformation, hnav thiab cratering ntawm saw txuas (scrapping)
(4) Kev hnav hauv zos ntawm qhov chaw ntawm cov saw txuas (tuaj yeem kho tau)
(5) Cov saw txuas yog me ntsis hnav thiab deformed (nws tuaj yeem siv txuas ntxiv mus)
Post lub sij hawm: Dec-17-2021